On Thu, 28 Jun 2012, Jan Kara wrote: > > Do you have any other ideas what to do with it? > Yeah, it's nasty and neither solution looks particularly appealing. One > idea that came to my mind is: I'm trying to solve some races between direct > IO, buffered IO, hole punching etc. by a new mapping interval lock. I'm not > sure if it will go anywhere yet but if it does, we can fix the above race > by taking the mapping lock for the whole block device around setting block > size thus effectivelly disallowing any IO to it. > > Honza > -- > Jan Kara <jack@xxxxxxx> > SUSE Labs, CR What races are you trying to solve? There used to be i_alloc_mem that prevented direct i/o while the file is being truncated, but it disappeared in recent kernels... Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
